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US4184791A - Mine roof support assembly - Google Patents

Mine roof support assembly Download PDF

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Publication number
US4184791A
US4184791A US05/856,077 US85607777A US4184791A US 4184791 A US4184791 A US 4184791A US 85607777 A US85607777 A US 85607777A US 4184791 A US4184791 A US 4184791A
Authority
US
United States
Prior art keywords
guide rod
units
unit
roof support
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/856,077
Other languages
English (en)
Inventor
Kunibert Becker
Burghardt Elsner
Gunter Lagodka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Application granted granted Critical
Publication of US4184791A publication Critical patent/US4184791A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/083—Advancing mechanisms forming parts of the roof supports acting on a firm abutment adapted thereto
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type supports
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports

Definitions

  • This invention relates to a mine roof support assembly constituted by three mine roof support units positioned side-by-side along a beam.
  • a known form of assembly of this type has the central unit fastened to the beam for movement therewith and the two outer units connected to the beam by means of respective guide rod assemblies.
  • DT-OS 2,337,218 described a mine roof support assembly of this type in which the central unit forms an abutment for the advance of the two outer units.
  • the guide rod assemblies of the outer units are constituted by resilient guide rods connected to the beam, and the advance rams of the outer units are also connected to the beam.
  • an aligning ram is positioned between the central unit and the outer unit which lies below it down the incline, the purpose of this alignment ram being to align the central unit relative to the beam and thus also relative to the two outer units.
  • this assembly it is not always possible with this assembly to align the beam itself.
  • DT-OS 1,583,091 describes an assembly having three mine roof support units, the two outer units being connected by alignment rams which are positioned between these two units in the manner of guide bars. A separate alignment device, associated with these rams, is provided for aligning the central unit. This type of arrangement is not suitable, however, for the type of assembly having a beam fastened to the central unit.
  • DT-OS 2,453,225 describes a longwall face mine roof support assembly constituted by three units.
  • the central unit carries a generally U-shaped guide bar, the two parallel arms of which form guide rods for the two outer units.
  • the U-shaped guide bar is longitudinally adjustable by means of an alignment ram so that the spacing of the units can be varied. Again this type of arrangement is not suitable for the type of mine roof support assembly which has a beam fastened to its central unit.
  • the present invention provides a mine roof assembly comprising three mine roof support units positioned side-by-side along a beam, the central unit being fastened to the beam for movement therewith, and each of the two outer units being connected to the beam by means of a respective guide rod assembly, wherein each of the outer units is provided with an alignment device which acts on the beam, whereby the beam is displaceable in the direction of its longitudinal axis.
  • each of the alignment devices acts between the corresponding outer unit and the guide rod which connects that unit to the beam.
  • the alignment devices associated with the two outer units it is possible to adjust the position of the beam to account for the effect of any incline in the floor level of the mine working. Since the central unit is fastened to the beam for movement therewith, this unit is automatically aligned together with the beam. The outer units can then be aligned relative to the beam by means of their guide rod assemblies. Consequently, alignment rams, which are interposed in the manner of guide rods between adjacent pairs of units, are not required.
  • each alignment device comprises an alignment ram whose piston rod carries a coupling member which transmits force to the beam via the associated guide rod assembly.
  • Each coupling member may be provided with an aperture through which the corresponding guide rod assembly passes with a vertical clearance.
  • each alignment ram is mounted so that its working stroke lies in a direction parallel to the longitudinal axis of the beam. This means that alignment rams having only a short working stroke can be utilised.
  • Each coupling member may be fixed to a respective push rod which is connected to the corresponding piston rod by means of a bridge member, each push rod being parallel to the associated piston rod.
  • each alignment ram forms a compact unit together with its push rod and coupling member, and so can be interposed between the front end of its guide rod assembly and the beam.
  • each outer unit is constituted by a respective resilient guide rod whose front end is connected to the beam and whose rear end is slidably supported on guide means provided on the corresponding unit, and each guide rod is pivotally connected at its front end to the beam.
  • the rear end of each guide rod is provided with a transverse yoke which slides on said guide means.
  • Each of the outer units may be provided with an advance ram whose working stroke lies in a direction substantially perpendicular to the longitudinal axis of the beam.
  • each advance ram may be pivotally connected to the corresponding transverse yoke.
  • Each support unit may have a floor sill, and each alignment device may be mounted on upstanding parallel brackets projecting upwards from the front end of the corresponding floor sill.
  • each of the floor sills is constituted by two parallel, spaced apart sections.
  • said upstanding brackets project upwards one from each section of each floor sill, and the guide rod assembly of each outer unit is mounted in the space between the two sections of the floor sill of that unit. It is also convenient for the advance ram of each outer unit to be mounted above the guide rod assembly of that unit.
  • the central unit is connected to the beam by means of a pair of resilient guide rods, and the resilient guide rods of the central unit are mounted in the space between the two sections of the floor sill of that unit.
  • the beam is connected to, or forms part of, the longwall conveyor provided adjacent to the longwall face for removing won material.
  • this type of assembly can also be used for aligning and anchoring a longwall conveyor.
  • the invention also provides a method of aligning a mine roof support assembly which comprises three mine roof support units positioned side-by-side along a beam, the central unit being fastened to the beam for movement therewith and each of the two outer units being connected to the beam by means of a respective guide rod assembly, the method comprising the steps of aligning the beam and the central unit by means of alignment devices associated with the two outer units, with the two outer units anchored, and aligning the two outer units by means of their guide rod assemblies with the central unit anchored.
  • FIG. 1 is a plan view of three adjacent units of the mine roof support assembly
  • FIG. 2 is a part-sectional side elevation through one of the units of FIG. 1;
  • FIG. 3 is an end elevation of the unit of FIG. 3.
  • FIG. 1 shows a mine roof support assembly comprising three basically similar units I, II and III arranged in a side-by-side, parallel relationship.
  • Each unit I, II and III has a floor sill structure 10 which supports two hydraulic telescopic props 14 connected thereto by ball-and-socket joints 13.
  • the floor sill structure 10 of each unit I, II and III is effectively sub-divided in the longitudinal direction, that is to say in the direction S of advance, and composed of separate sill sections 11 and 12.
  • the heads of the props 14 support a roof cap (not shown) either directly, or indirectly by supporting a goaf shield (not shown) hinged thereto.
  • the central unit II is connected to a beam 15 by means of two resilient guide rods 16 which are located in the space 17 between the two floor sill sections 11 and 12, the rear (goaf side) ends of the rods being fixed to a transverse yoke 18 which is mounted on guides 19 fixed to the inner lateral faces of the sections 11 and 12.
  • the front (working face side) ends of the rods 16 are fixed to a block 20 which in turn is fixed to the beam 15.
  • the central unit II is then connected to the beam 15 in such a manner that, apart from slight movements for taking up any uneveness in the floor of the mine working the two parts act as one during advance of the assembly.
  • Each of the outer units I and III is connected to the beam 15 by means of a respective guide rod assembly 22 and vertical pivot joint 21.
  • Each guide rod assembly 22 is constituted by a single resilient guide rod located in the space 17 between the two floor sill sections 11 and 12 of the unit I or III in question.
  • the rear (goaf side) end of each guide rod 22 is fixed to a transverse yoke 23 which is slidably mounted on guides 19 fixed to the inner lateral faces of the corresponding floor sill sections 11 and 12.
  • the cylinder 25 of a respective hydraulic advance ram is pivotally connected (about a horizontal pivot 26) to a pair of brackets 24 attached to each of the transverse yokes 23.
  • the rams 25 are positioned above the corresponding guide rods 22 and their piston rods 28 are pivotally connected (about corresponding horizontal pivots 29) to pairs of parallel brackets 27 attached to the floor sill sections 11 and 12 at the front (working face) ends of the units I and III.
  • the brackets 27 also support short-stroke hydraulic alignment rams 30 whose axes lie parallel to the longitudinal axis of the beam 15.
  • Each ram 30 is mounted to its support brackets 27 in such a manner that its cylinder cannot move relative thereto in the direction of the longitudinal axis of the beam, whereas the floor sill sections 11 and 12 are vertically movable, to a limited extent, relative to the cylinder.
  • the piston rod 31 of each ram 30 is rigidly connected, via a bridge member 32, to a respective push rod 33 which is arranged parallel to, and beneath the corresponding ram 30.
  • Each push rod 33 is guided in guide apertures (not shown) in the corresponding brackets 27.
  • An oval link 34 is fastened to the underside of each push rod 33, the corresponding guide rod 22 passing through each link with a limited vertical freedom of movement.
  • the push rods 33 will be displaced by the extending (or retracting) piston rods 31 in the direction of the arrow R.
  • the links 34 are fixed to their push rods 33, they also move in the direction of the arrow R.
  • the beam 15 together with the central unit II will also be displaced in the direction R, that is to say in the longitudinal direction of the longwall working face.
  • the force from the alignment rams 30 is, thus, transmitted via the links 34 and the resilient guide rods 22 to the beam 15. Because of their resilience, the guide rods 22 may also be elastically deformed, in the direction of the applied force, during this alignment process.
  • the two outer units I and III are aligned with respect to the beam 15, once their props 14 are depressurised, by means of their guide rod assemblies 22.
  • the advance of the roof support assembly in the direction S is effected in the usual way by means of the advance rams 25, the central unit II being advanced first (together with the beam 15), and the two outer units I and III then being advanced in a follow-up sequence.
  • the central unit II its props 14 are depressurised and the two outer units I and III form abutments for the advance, and during the advance of the outer units their props 14 are depressurised and the central unit acts as an abutment.
  • the three units I, II and III may be supported against one another in the goaf side area. This can be effected by means of laterally extensible side bars known per se which are arranged on the goaf shields.
  • the guide rod assemblies of the two outer units I and III each comprise only a single guide rod 22 which is located in the relatively large space 17 between the corresponding floor sill sections 11 and 12, it is possible to displace the beam 15 from its represented central position by approximately 50 to 100 millimeters in either direction R.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Bridges Or Land Bridges (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
US05/856,077 1976-12-04 1977-11-30 Mine roof support assembly Expired - Lifetime US4184791A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19762655076 DE2655076A1 (de) 1976-12-04 1976-12-04 Ausbaugespann
DE2655076 1976-12-04

Publications (1)

Publication Number Publication Date
US4184791A true US4184791A (en) 1980-01-22

Family

ID=5994709

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/856,077 Expired - Lifetime US4184791A (en) 1976-12-04 1977-11-30 Mine roof support assembly

Country Status (6)

Country Link
US (1) US4184791A (cs)
CS (1) CS225130B2 (cs)
DE (1) DE2655076A1 (cs)
FR (1) FR2372957A1 (cs)
GB (1) GB1568780A (cs)
PL (1) PL112353B1 (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390308A (en) * 1980-09-13 1983-06-28 Gewerkschaft Eisenhutte Westfalia Advance mechanism for a mine roof support assembly
US4978248A (en) * 1988-07-13 1990-12-18 Gewerkschaft Eisenhutte Westfalia, Gmbh Advanceable mine roof supports
CN117211843A (zh) * 2023-11-09 2023-12-12 焦作煤业集团赵固（新乡）能源有限责任公司 一种煤矿顶板支护装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478194A1 (fr) * 1980-03-15 1981-09-18 Hemscheidt Maschf Hermann Dispositif de guidage pour chevalets de soutenement marchant
DE3238256A1 (de) * 1982-10-15 1984-04-19 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Mobiles ausbaugespann, insbesondere fuer den einsatz beim pfeilerrueckbau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431738A (en) * 1967-06-06 1969-03-11 Karl Maria Groetschel Roof supporting systems for mine workings
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings
US3504944A (en) * 1968-04-26 1970-04-07 Gewerk Eisenhuette Westfalia Devices for tensioning a conveyor in a mineral mining installation
DE1608292B1 (de) * 1968-03-01 1970-08-06 Bergwerksverband Gmbh Aufhaengung von Versatz-,insbesondere Blasversatzleitungen an den Kappen des wandernden Strebausbaus
DE2047769A1 (de) * 1969-09-30 1971-04-08 Gullick Dobson Ltd , Wigan, Lanca shire (Großbritannien) Grubenausbau fur das Strebende
DE2355234A1 (de) * 1973-11-05 1975-05-07 Groetschel Karl Maria Dipl Ber Vorrichtung zum einstellen der schreitrichtung einer gruppe von wanderausbaugestellen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1427526A (fr) * 1965-03-26 1966-02-04 Gewerk Eisenhuette Westfalia Soutènement hydraulique marchant à caissons
FR1499329A (fr) * 1966-09-09 1967-10-27 Gewerk Eisenhuette Westfalia Soutènement marchant destiné à être utilisé dans une taille
DE1932378A1 (de) * 1969-06-26 1971-01-07 Gullick Dobson Ltd Selbstvorrueckendes Grubenausbauelement
FR2157275A5 (cs) * 1971-10-22 1973-06-01 Alacchi Georges
DE2337218C3 (de) * 1973-07-21 1980-11-20 Hermann Hemscheidt Maschinenfabrik Gmbh U. Co, 5600 Wuppertal Schreiteinheit von Schildausbaugestellen
DE2453225C2 (de) * 1974-11-09 1983-10-06 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Dreirahmen-Schildausbaugespann, insbesondere für den Einsatz in stark geneigter Lagerung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings
US3431738A (en) * 1967-06-06 1969-03-11 Karl Maria Groetschel Roof supporting systems for mine workings
DE1608292B1 (de) * 1968-03-01 1970-08-06 Bergwerksverband Gmbh Aufhaengung von Versatz-,insbesondere Blasversatzleitungen an den Kappen des wandernden Strebausbaus
US3504944A (en) * 1968-04-26 1970-04-07 Gewerk Eisenhuette Westfalia Devices for tensioning a conveyor in a mineral mining installation
DE2047769A1 (de) * 1969-09-30 1971-04-08 Gullick Dobson Ltd , Wigan, Lanca shire (Großbritannien) Grubenausbau fur das Strebende
DE2355234A1 (de) * 1973-11-05 1975-05-07 Groetschel Karl Maria Dipl Ber Vorrichtung zum einstellen der schreitrichtung einer gruppe von wanderausbaugestellen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390308A (en) * 1980-09-13 1983-06-28 Gewerkschaft Eisenhutte Westfalia Advance mechanism for a mine roof support assembly
US4978248A (en) * 1988-07-13 1990-12-18 Gewerkschaft Eisenhutte Westfalia, Gmbh Advanceable mine roof supports
CN117211843A (zh) * 2023-11-09 2023-12-12 焦作煤业集团赵固（新乡）能源有限责任公司 一种煤矿顶板支护装置
CN117211843B (zh) * 2023-11-09 2024-02-02 焦作煤业集团赵固（新乡）能源有限责任公司 一种煤矿顶板支护装置

Also Published As

Publication number Publication date
FR2372957A1 (fr) 1978-06-30
DE2655076A1 (de) 1978-06-15
CS225130B2 (en) 1984-02-13
GB1568780A (en) 1980-06-04
PL112353B1 (en) 1980-10-31
PL202599A1 (pl) 1978-06-19
FR2372957B1 (cs) 1982-12-03

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